In telecommunication and information theory, the code rate (or information rate) of a forward error correction code is the proportion of the data-stream that is useful (non-redundant). That is, if the code rate is k / n {\displaystyle k/n} , for every k bits of useful information, the coder generates a total of n bits of data, of which n − k {\displaystyle n-k} are redundant.
In telecommunication and information theory, the code rate (or information rate) of a forward error correction code is the proportion of the data-stream that is useful (non-redundant). That is, if the code rate is k / n {\displaystyle k/n} , for every k bits of useful information, the coder generates a total of n bits of data, of which n − k {\displaystyle n-k} are redundant.
Source: Wikipedia "Code rate" · CC BY-SA 4.0
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